20250910-linuxkm-more-OBJECT_FILES_NON_STANDARD

[douzzer]

linuxkm/Kbuild: when ENABLED_LINUXKM_PIE, use undefine CONFIG_OBJTOOL to inhibit false-positive "unannotated intra-function call" due to inline retpolines;

linuxkm/Makefile, linuxkm/include.am, linuxkm/module_hooks.c: remove linuxkm/pie_first.c, linuxkm/pie_last.c, and references to them (replaced by fenceposts in linuxkm/wolfcrypt.lds).

tested with

wolfssl-multi-test.sh ...
check-source-text
linuxkm-fips-v6-dist-insmod-cust2
'.*linuxkm.*pie.*'

[douzzer]

retest this please

Found unhandled hudson.remoting.RequestAbortedException exception:
java.io.StreamCorruptedException: invalid stream header: 636F7272
	hudson.remoting.Request.abort(Request.java:358)
	hudson.remoting.Channel.terminate(Channel.java:1196)
	hudson.remoting.SynchronousCommandTransport$ReaderThread.run(SynchronousCommandTransport.java:95)